<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        padding: 0;
        margin: 0;
        box-sizing: border-box;
      }
      .content {
        width: 910px;
        height: 806px;
        background-color: aqua;
        margin: 50px auto;
      }
      .item {
        float: left;
        width: 300px;
        height: 400px;
        background-color: blueviolet;
      }

      .item:nth-child(2) {
        margin-left: 5px;
        margin-bottom: 5px;
      }
      .item:nth-child(3) {
        margin-left: 5px;
        margin-bottom: 5px;
      }
      .item:nth-child(4) {
        margin-left: 5px;
      }
      .item:nth-child(5) {
        margin-left: 5px;
      }

      .item:first-child {
        height: 100%;
        background-color: burlywood;
      }
    </style>
  </head>
  <body>
    <div class="content">
      <div class="item">1</div>
      <div class="item">2</div>
      <div class="item">3</div>
      <div class="item">4</div>
      <div class="item">5</div>
    </div>
  </body>
</html>
